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TI-2026-77458 Aliases CVE-2026-91399GHSA-x5cm-8376-g3jj

Improper access control in Oracle Primavera P6 Web Access

Priority LOW 19CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

The Web Access component of Oracle Primavera P6 Enterprise Project Portfolio Management is affected in supported versions from 21.12.0.0 through 21.12.21.9, from 22.12.0.0 through 22.12.21.4, from 23.12.0 through 23.12.20, from 24.12.0 through 24.12.16 and from 25.12.0 through 25.12.8. An improper access control flaw (CWE-284) lets a low-privileged attacker with network access over HTTP make unauthorized updates, inserts or deletes to some data accessible in the product. The flaw is easy to exploit, and the CVSS 3.1 base score is 4.3 with impact limited to integrity.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and Engineering (component: Web Access). Supported versions that are affected are 21.12.0.0-21.12.21.9, 22.12.0.0-22.12.21.4, 23.12.0-23.12.20, 24.12.0-24.12.16 and 25.12.0-25.12.8. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Primavera P6 Enterprise Project Portfolio Management. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Primavera P6 Enterprise Project Portfolio Management accessible data. CVSS 3.1 Base Score 4.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00194 9th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OraclePrimavera P6 Enterprise Project Portfolio Management21.12.0.0 – 21.12.21.9; 22.12.0.0 – 22.12.21.4; 23.12.0 – 23.12.20; 24.12.0 – 24.12.16; 25.12.0 – 25.12.8—No fix listedCNA
  • Primavera P6 Enterprise Project Portfolio Management VendorOracle Affected 21.12.0.0 – 21.12.21.9; 22.12.0.0 – 22.12.21.4; 23.12.0 – 23.12.20; 24.12.0 – 24.12.16; 25.12.0 – 25.12.8 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:*:*:*:*:*:*:*:*——Oracle
  • cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:*:*:*:*:*:*:*:* Versions — — ·Oracle

Remediation

The sources list no fixed version for Oracle Primavera P6 Enterprise Project Portfolio Management.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Oracle Primavera P6 Enterprise Project Portfolio Management — oracle.com/security-alerts/cpuoct2026.html

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-77435 Improper access control in Oracle Primavera P6 Web AccessPriority LOW 28
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-91399
  2. 2026-10-21 Alias added: GHSA-x5cm-8376-g3jj
  3. 2026-10-23 Weakness changed · CISA ADP
  4. 2026-10-23 CISA SSVC decision points changed

References

Advisory 1

  • TI-2026-34425 Improper privilege management in Oracle Payments KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-27421 Missing authentication in Oracle PeopleSoft Enterprise PeopleTools KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-17661 Improper access control in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-38252 Improper authentication in Oracle Concurrent Processing KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-38151 Missing authentication in Oracle Identity Manager KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-07142 Code injection in Spring Framework KEVCVSS 3.1CRITICAL 9.8
See all 14200 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences